Hair clippers having interchangeable comb plates



Feb. 24, 1959 M. ANDlS 2,874,463

HAIR CLIPPERS HAVING INTERCHANGEABLE COMB PLATES Filed Sept. 12, 1956 IN VEN TOR.

MA rHEW AND 15 BY A rraeusvs mil-41.44- m United States Patent HAIR CLIPPERS HAVING INTERCHANGEABLE COMB PLATES Mathew Andis, Racine, Wis., assignor to Andis Clipper Co., Racine, Wis., a corporation of Wisconsin Application September 12, 1956, Serial No. 609,459

6 Claims. (Cl. 30-200) This invention relates to improvements in hair clippers having interchangeable comb plates. Andis Patent No.

2,168,642 is an example of prior art devices of this' and the bed portion of the clipper case are provided with interengaging key means for accurately positioning and firmly mounting the comb plate on the clipper case. In its mounted position the comb plate is Operatively associated with the shear blade which is semi-permanently connected to the motor armature. The shear blade is common to the several interchangeable comb platesand remains secure to the motor armature on removal of the comb plate.

The comb plates of the present invention are characterized by keeper hooks with which an oscillatable latch pivotally mounted on the bed portion of the clipper case releasably interlocks to hold the comb plate to the clipper case. In the preferred embodiment of the invention the keeper hook is formed integrally with the mounting key.

Other features and advantages of the invention will be more apparent from an examination of the following disclosure in which:

Fig. l is a fragmentary cross sectional view taken through the head of a hair clipper embodiment of the present invention.

Fig. 2 is a bottom plan view of the bed portion of the clipper case, the comb plate being removed and beingshown in Fig. 3 which is a plan view of the inside mating surface thereof.

Fig. 4 is a view similar to Fig. 2 but showing the latch moved to a position of engagement with the keeper hook.

Fig. 5 is a fragmentary cross sectional view taken through the assembled comb plate and clipper case bed, the plane of the cross section being generally indicated by line 5-5 in Fig. 3.

The clipper case 10 contains the usual vibratory motor and armature 8 to which the shear blade driving arm 11 is connected. The shear blade 12 may have a conventional articulate connection at 9 to' the driving arm 11.

Operatively associated with the shear blade 12 are interchangeable comb plates 13, a typical one of these being illustrated in the drawing. The several comb plates will differ in the thickness and spacing of their teeth 19 whereby to adapt the device for various clipping functions. When mounted the respective comb plates must be very accurately registered with the shear blade 12 which is semi-permanently connected to the driving arm 11 and remains with the main body of the clipper notwithstanding removal of the comb plate.

For the purpose of accurately keying the respective 2,874,463 Patented Feb. 24, 1959 comb plates 13 to the clipper case, they are each provided with a superimposed plate 15 having lateral wings or keys 14 which are interengageable in the socketsv or keyways 16 formed between sets of paired lugs 17 formed on the bed portion 18 of the vclipper case. Accordingly, when the comb plate is applied to the case bed 18, the keys 14 seat within the sockets 16 to positively register the comb plate 13 with the shear blade 12.

Mounting plate 15 is further provided with a keeper hook 21 beneath which the rotatable latch portion 22 of lever 23 releasably engages to interlock the comb plate 13 on the clipper case bed 18. Lever 23 is provided with an exposed handle 24 by which it may be manipulated between its disengaged position shown in Fig. 2 in which the keeper hook 21 may pass freely through the latch notch 25 and an engaged position shown in Fig. 4 in which the latch 22 engages beneath the hook 21.

Lever 23 is pivotally mounted on the screw pintle 26 which may have an enlarged screw slotted head 27 projecting beyond the lever 23 and which is received in the socket 30 formed on the mounting plate 15. Bed 18 is recessed at 31 beyond the plane of rotation of latch 22 to receive the hook 21 to align its bight 32 with the latch 22.

As best shown in Fig. 4 lever 23 is provided with a flat shoulder 33 which engages with the corresponding fiat shoulder 34 of lug 17 in its engaged position. Lever 23 is desirably made of resilient material, such as nylon, etc., and has a corner 35 spaced from pintle 26 a distance slightly greater than shoulder 34. Accordingly, the resilient lever must yield slightly as corner 35 passes shoulder 34, thereby impositively interlocking the latch in engaged position. The impositive locking detent thus provided prevents inadvertent disengagement of the latch from the keeper 21.

I claim:

1. In a hair clipper having interchangeable comb plates, the combination with a clipper case having a bed portion, of a removable comb plate having a mounting portion, interlocking means comprising a socket in one of said portions and a key on the other said portion for accurately keying said plate to said bed portion for operative engagement with a shear blade, releasable fastening means in addition to said interlocking means and comprising one of said portions being provided with a keeper and the other portion being provided with an oscillatory member having a latch portion releasably engageable with said keeper and a handle portion by which said latch may be manipulated.

2. The device of claim 1 in which said keeper cornprises a hook integral with said key.

3.. In a hair clipper having interchangeable comb plates, the combination with a clipper case having a bed portion, a motor, a shear blade and means mounting said shear blade on said motor, of a comb plate removable from said clipper and from association with said shear blade, said bed portion being provided with laterally spaced pairs of upstanding lugs defining seating sockets therebetween, said comb plate being provided with a plate superimposed thereon and having wing portions received between said paired lugs whereby to properly align the comb plate with the shear blade when the parts are mated, said plate being further provided intermediate said wings with a keeper hook, and a latch pivotally mounted on said bed portion between said laterally spaced paired lugs and pivotally movable between positions of g engagement and non-engagement with said keeper hook.

4. The device of claim 3 in which said bed portion and said latch are provided with detent means interlock- 3 ingly engaged in the position of said "latch in which it engages with said keeper hook whereby to impositively hold said parts in engagement.

5. The device of claim 3 in which said latch has an exposed pintle end, said superimposed plate being provided with a socket which receives said pintle end in the mounted position of the comb plate.

6. The device of claim 3 in which said bed portion is provided with a recess beyond the path of oscillation of said latch whereby to receive the keeper hook in the mounted position of the comb plate to align the bight of the hook with said latch.

UNITED STATES PATENTS Greenwald June 4, 1872 Brachhausen Mar. 21, 1899 Warlick Jan. 21, 1908 Wahl Mar. 18, 1924 Lutes Apr. 9, 1929 Schmidt Sept. 20, 1932 Sizer June 15, 1937 Andis et a1 Feb. 9, 1954 

